From the video

But I think Jaylen Warren's fine, too. That same handcuff sort of video I was doing, I think I had Rico in his RB6. No, RB5. RB5. And I had a lot of people say, 'Hey, you're Rico's a starter. Jaylen Warren is a backup. Guess where Jaylen Warren would rank?' RB5. I think it's going to be a close to 5050 committee and an offense that just enabled two top 24 running backs last year in PPR points per game.
STACKED’s take
Round seven value despite backup label; RB5 in backup analysis, 50/50 committee upside
Ian Hartitz endorses Jaylen Warren as a round seven pick in the Steelers running back committee, noting Warren also ranked as RB5 in his backup-only analysis despite being labeled a backup. Hartitz projects a close-to-50/50 committee split in an offense that enabled two top-24 running backs last year in PPR points per game, with an old quarterback (38+) who wants to get the ball out quickly; Steelers RBs finish top-8 in targets 75% of the time over the past decade. Both Warren and Rico Dowdle can be low-end RB2/flex options, and if either goes down, the other booms. Hartitz uses a Steelers RB pick in round seven as part of a deliberate team-building strategy to potentially stop the wide receiver run.
Jaylen WarrenRB · PITPlayer page — value, ADP, projections, and every insight